Skip to main content
release_alert
Welcome to the new Scholars 3.0! Read about new features and let us know what you think.
cancel
Journal cover image

Maximal activation of the human diaphragm but not inspiratory intercostal muscles during static inspiratory efforts.

Publication ,  Journal Article
McKenzie, DK; Plassman, BL; Gandevia, SC
Published in: Neurosci Lett
June 17, 1988

It is widely held that transdiaphragmatic pressure is a reliable index of the extent of central activation of the diaphragm but the maximal voluntary transdiaphragmatic pressure is lower during inspiratory than expulsive efforts. To determine whether the diaphragm is fully activated during the two manoeuvres supramaximal stimuli were delivered to both phrenic nerves during maximal efforts. No discernible twitch was evoked during 30-55% of attempted maximal efforts with either voluntary manoeuvre. Thus the difference in maximal transdiaphragmatic pressure between the manoeuvres must reflect changes in chest-wall geometry or mechanics rather than in the phrenic motor outflow. Inspiratory intercostal muscle activity was consistently submaximal during maximal inspiratory efforts.

Duke Scholars

Published In

Neurosci Lett

DOI

ISSN

0304-3940

Publication Date

June 17, 1988

Volume

89

Issue

1

Start / End Page

63 / 68

Location

Ireland

Related Subject Headings

  • Positive-Pressure Respiration
  • Phrenic Nerve
  • Male
  • Intermittent Positive-Pressure Breathing
  • Intercostal Muscles
  • Humans
  • Female
  • Electric Stimulation
  • Diaphragm
  • 1702 Cognitive Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
McKenzie, D. K., Plassman, B. L., & Gandevia, S. C. (1988). Maximal activation of the human diaphragm but not inspiratory intercostal muscles during static inspiratory efforts. Neurosci Lett, 89(1), 63–68. https://doi.org/10.1016/0304-3940(88)90481-8
McKenzie, D. K., B. L. Plassman, and S. C. Gandevia. “Maximal activation of the human diaphragm but not inspiratory intercostal muscles during static inspiratory efforts.Neurosci Lett 89, no. 1 (June 17, 1988): 63–68. https://doi.org/10.1016/0304-3940(88)90481-8.
McKenzie DK, Plassman BL, Gandevia SC. Maximal activation of the human diaphragm but not inspiratory intercostal muscles during static inspiratory efforts. Neurosci Lett. 1988 Jun 17;89(1):63–8.
McKenzie, D. K., et al. “Maximal activation of the human diaphragm but not inspiratory intercostal muscles during static inspiratory efforts.Neurosci Lett, vol. 89, no. 1, June 1988, pp. 63–68. Pubmed, doi:10.1016/0304-3940(88)90481-8.
McKenzie DK, Plassman BL, Gandevia SC. Maximal activation of the human diaphragm but not inspiratory intercostal muscles during static inspiratory efforts. Neurosci Lett. 1988 Jun 17;89(1):63–68.
Journal cover image

Published In

Neurosci Lett

DOI

ISSN

0304-3940

Publication Date

June 17, 1988

Volume

89

Issue

1

Start / End Page

63 / 68

Location

Ireland

Related Subject Headings

  • Positive-Pressure Respiration
  • Phrenic Nerve
  • Male
  • Intermittent Positive-Pressure Breathing
  • Intercostal Muscles
  • Humans
  • Female
  • Electric Stimulation
  • Diaphragm
  • 1702 Cognitive Sciences